Practice Free 300-820 Exam Online Questions
Which protocol and port are used for signaling between on-premises Cisco Webex Video Mesh Nodes and Cloud Media Services?
- A . standard SIP over TCP port 5060
- B . signaling over HTTPS TCP port 443
- C . standard SIPTLS over TCP port 5061
- D . signaling over TCP port 444
An administrator installs a new webserver (server1.example.com C 10.1.1.90) for storing Cisco Jabber update files to the network, but all Mobile and Remote Access registered clients still run the old Jabber software version, and the update fails.
Which configuration task on an Expressway server solves the Jabber software update issue?
- A . Add a rule with the URL http://server1.example.com:80/to the outbound HTTP allow list manually to allow pushing the new software to the clients.
- B . Add a rule with the URL http://server1.example.com:80/to the inbound HTTP allow list manually to allow access to the new web server.
- C . Add a rule with the server IP address 10.1.1.90 in the URL to the inbound HTTP allow list because server names and FQDNs are not supported.
- D . Run an IM and Presence server discovery process on Expressway-C to add the new web server to
the inbound HTTP allow list automatically.
Which statement about the Cisco Webex hybrid service is true?
- A . Expressway Connector is required for an on-premises Exchange server.
- B . Hybrid Message service works only with Jabber cloud deployment.
- C . Directory Connector is required for Azure AD.
- D . Directory Connector must be deployed for OBTP to work with on-premises video devices.
Which media encryption mode can be configured on an Expressway zone?
- A . Advanced Encryption Standard
- B . IPsec
- C . Triple Data Encryption Standard
- D . force unencrypted
What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?
- A . You must have the Intercluster Sync Agent working across your IM and Presence clusters.
- B . You must have the Intercluster Lookup Service working across all of your IM and Presence clusters.
- C . Your IM and Presence Service clusters must have Multiple Device Messaging disabled.
- D . AXL service should be activated only on the publisher of each IM and Presence cluster.
Which describes what could done on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?
- A . Application layer gateway could be enabled to bridge the media traffic.
- B . A static NAT route could be added to the firewall to bridge the two networks.
- C . The Expressway-E could be enabled for Dual-NIC capability.
- D . The Expressway-E could be enabled for interworking.
A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access. The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client.
What else can be done to solve this problem?
- A . Create a new CSR with new information on the SAN field.
- B . Include Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.
- C . Change the domain name.
- D . Change the FQDN of the Expressway.
When does the Webex App Endpoint send media to the Video Mesh cluster during a meeting?
- A . when the Webex cloud media services are offline
- B . when there is insufficient bandwidth at the MPLS WAN edge
- C . when the round-trip delay to the Video Mesh cluster is shorter than the round-trip delay to the Webex cloud media services
- D . when there is insufficient bandwidth at the internet edge
Why would a Cisco Jabber contact under Hybrid Messaging Integration be grayed out?
- A . The contact uses Cisco Webex Teams and Jabber and remains as Do not Disturb for 30 minutes.
- B . The contact was using only Cisco Webex Teams and changed the status to Away.
- C . The contact set Out of the Office for Cisco Webex Teams.
- D . The other user has not used Cisco Webex Teams or Jabber within the last 72 hours, so they are offline.
Which set of actions configures ACME certificates on Expressways?
- A . Configure ACME Certificate settings on your Expressway-E, and change the ACME automated scheduler field to ON.
- B . Configure ACME Certificate settings on your Expressway-C, and change the ACME automated scheduler field to OFF.
- C . Configure ACME Certificate settings on your Expressway-C, and change the ACME automated scheduler field to ON.
- D . Configure ACME Certificate settings on your Expressway-E, disable the Expressway cluster, and change the ACME automated scheduler field to OFF.